I am starting to get a feel for my issue with all your comments and suggestions. My rig does charge the batteries at 14 volts, so my problem after years of traveling in this unit has only become an issue for me when off the grid for a week or so. I do use a 1000-watt generator and plug the rig directly to it to charge our toys and was hoping it would keep my house batteries up. But you're never too old to learn. So, my cheap fix will be to only boondock for three or four days at a time. I'm old, my rig is old, so I am not inclined to spend the money to fix what for the most part is not broke. Thanks for all your impute.